CN110783104A - Compliant pin structure for discrete electrical components - Google Patents

Compliant pin structure for discrete electrical components Download PDF

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Publication number
CN110783104A
CN110783104A CN201910681534.8A CN201910681534A CN110783104A CN 110783104 A CN110783104 A CN 110783104A CN 201910681534 A CN201910681534 A CN 201910681534A CN 110783104 A CN110783104 A CN 110783104A
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CN
China
Prior art keywords
compliant pin
base member
compliant
lead
electrical component
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910681534.8A
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Chinese (zh)
Inventor
P.苏
K.D.摩尔
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Vitesco Technologies USA LLC
Original Assignee
TEMIC AUTOMOTIVE NA Inc
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Publication of CN110783104A publication Critical patent/CN110783104A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/224—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H01G2/06—Mountings specially adapted for mounting on a printed-circuit support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H01G2/106—Fixing the capacitor in a housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/005—Electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/236—Terminals leading through the housing, i.e. lead-through
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H05K1/184—Components including terminals inserted in holes through the printed circuit board and connected to printed contacts on the walls of the holes or at the edges thereof or protruding over or into the holes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
    • H05K3/326—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor the printed circuit having integral resilient or deformable parts, e.g. tabs or parts of flexible circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F2027/297—Terminals; Tapping arrangements for signal inductances with pin-like terminal to be inserted in hole of printed path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
    • H01G4/2325—Terminals electrically connecting two or more layers of a stacked or rolled capacitor characterised by the material of the terminals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10015—Non-printed capacitor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/1003—Non-printed inductor

Abstract

The invention relates to a compliant pin structure for discrete electrical components. A discrete electrical component is disclosed, comprising: a component member having at least one lead; and a base member on which the constituent member is supported. The electrical component also includes at least one compliant pin member, each compliant pin member having a first end portion configured for press-fit engagement in a printed circuit board and a second end portion electrically connected to the at least one lead of the component member. The at least one compliant pin extends at least partially through or into the base member.

Description

Compliant pin structure for discrete electrical components
Technical Field
The present invention relates generally to a pin structure for an electrical component, and more particularly to a pin structure that provides one or more compliant pins for a discrete electrical component.
Background
Discrete electrical components typically include pins for connecting to other electrical components or devices. Such connections are typically made via a Printed Circuit Board (PCB). Pins for discrete passive components such as capacitors and inductors are generally of two types: 1) a via pin having a length for passing through the entire PCB via a hole in the PCB and then soldered at a surface of the PCB opposite to the surface of the PCB where the component is located; and 2) surface mount pins, wherein the pins are shaped to be soldered along the same surface of the PCB on which the discrete components are disposed.
Components with via pins typically have an internal lead that is soldered within the component to an external via pin. The use of electrical components with through-hole pins disadvantageously results in a relatively large amount of space being occupied on both sides of the PCB to protect and provide electrical connections to the components.
Existing discrete capacitors having surface mount pins extending from the housing for connection along the PCB surface typically include a plastic housing or base to which the capacitor can is attached.
Disclosure of Invention
The exemplary embodiments overcome the disadvantages found in existing electrical components. According to an exemplary embodiment, there is provided a discrete electrical component comprising: a component member having at least one lead; and a base member on which the constituent member is supported. The electrical component also includes at least one compliant pin member, each compliant pin member having a first end portion configured for press-fit engagement in a printed circuit board and a second end portion electrically connected to the at least one lead of the component member. The at least one compliant pin extends at least partially through or into the base member.
In one embodiment, the at least one lead and the at least one compliant pin member of the component member are integrally formed as a single member. In another embodiment, the at least one lead of the component member is soldered to the second end portion of the at least one compliant pin member.
In a first aspect, at least one of the central portion and the second end portion of the at least one compliant pin member extends through or into the base member. In another aspect, the base member includes a recessed portion that receives at least a portion of the component member therein.
In another aspect, the at least one lead includes a plurality of leads, the at least one compliant pin member includes a plurality of compliant pin members, each lead is connected to a compliant pin member, and the base member includes a first base member portion and a second base member portion, at least a first compliant pin member of the plurality of compliant pin members extends into or through the first base member portion, and a second compliant pin member of the plurality of compliant pin members extends into or through the second base member portion. In another aspect, the first base member portion and the second base member portion are spaced apart from and not directly connected to each other.
In one aspect, for each compliant pin member, a longitudinal axis of the first end portion is parallel to a longitudinal axis of the second end portion. In another aspect, for compliant pin members, the longitudinal axis of the first end portion of each compliant pin member is orthogonal to the longitudinal axis of the second end portion of the compliant pin member.
In one aspect, the component member includes at least one core and at least one coil wound around the at least one core. In another aspect, the discrete electrical component is a capacitor.
In another aspect, the at least one lead includes a plurality of leads, the at least one compliant pin member includes a plurality of compliant pin members, each lead is connected to a compliant pin member, and each of the plurality of compliant pin members extends into or through the base member. The plurality of compliant pin members may include one or more unconnected compliant pin members, each unconnected compliant pin member being electrically isolated from the plurality of leads of the component member and extending into or through the base member.
In one exemplary embodiment, a pin structure for a leadless electrical component having at least one lead is disclosed. The pin structure may include: a base member on which the constituent members are to be supported; and at least one compliant pin member, each compliant pin member having a first end portion configured for press-fit engagement in a printed circuit board and a second end portion configured for electrical connection with the at least one lead of the component member. The at least one compliant pin extends at least partially through or into the base member.
In one aspect, at least one of the central portion and the second portion of the at least one compliant pin member extends through or into the base member. In another aspect, the base member includes a recessed portion sized and shaped to receive at least a portion of the component member therein.
In one aspect, the at least one lead includes a plurality of leads, the at least one compliant pin member includes a plurality of compliant pin members, each compliant pin member is configured to be connected to a lead, and the base member includes a first base member portion and a second base member portion, at least a first compliant pin member of the plurality of compliant pin members extends into or through the first base member portion, and a second compliant pin member of the plurality of compliant pin members extends into or through the second base member portion. The first base component portion and the second base component portion may be spaced apart from each other and not directly connected to each other.
In another aspect, the at least one lead includes a plurality of leads, the at least one compliant pin member includes a plurality of compliant pin members, each compliant pin member is configured to connect to a lead, and each of the plurality of compliant pin members extends into or through the base member. The plurality of compliant pin members may include one or more unconnected compliant pin members, each configured to be electrically isolated from the plurality of leads of the component member and to extend into or through the base member.
Drawings
Aspects of the invention will be explained in detail below with reference to exemplary embodiments in conjunction with the drawings, in which:
FIG. 1 is a side cross-sectional view of an electrical component according to an exemplary embodiment;
FIG. 2 is a side elevational view of the electrical component of FIG. 1;
FIG. 3 is a bottom perspective view of the electrical component of FIG. 1;
FIG. 4 is an exploded perspective view of the electrical component of FIG. 1;
FIG. 5 is a perspective view of an electrical component according to another exemplary embodiment;
FIG. 6 is an exploded perspective view of the electrical component of FIG. 5; and
FIG. 7 is a perspective view of an electrical component according to another exemplary embodiment; and
fig. 8 is a perspective view of a compliant pin of the electrical component of fig. 1.
Detailed Description
The following description of the exemplary embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
These exemplary embodiments relate generally to discrete electrical components, such as passive electrical components, configured with compliant pins for forming a press-fit connection with a PCB or other substrate to which the component is to be attached. The exemplary embodiments described below relate to discrete passive electrical components.
Referring to fig. 1-4, discrete electrical components are shown according to one exemplary embodiment. In this embodiment, the electrical component is a capacitor 10, but it is understood that the electrical component 10 may be a different discrete electrical component having a similar shape and pin count. The capacitor 10 includes a can 12 in which a plurality of plates or conductive members 14 are disposed. The plates 14 are electrically isolated from each other and separated from each other by a dielectric material 16. The plate 14 may have almost any shape. Each board 14 may include or be connected to leads (not shown) for making external electrical connections to the board. In another embodiment, capacitor 10 does not include plate 14, but rather only includes two leads that are disposed in can 12 and separated from each other by a dielectric material. Such leads may have any shape. For example, the leads may form an interdigitated (inter) and/or interstitial (inter) pattern with one another. The barrel 12 may be constructed of a metallic composition, but it is understood that the barrel 12 may be constructed of other materials. Together, the can 12, plate 14 and dielectric material form the constituent components of the capacitor 10.
The capacitor 10 also includes a base member 18, the canister 12 being attached to the base member 18. In the exemplary embodiment shown, base member 18 includes a recessed portion 18A (fig. 4) that receives at least a portion of cartridge 12. In the case where the cartridge 12 is cylindrical, the concave portion 18A of the base member 18 is also cylindrical. The cartridge 12 may be secured to the base member 18, for example with an adhesive. The base member 18 has a plastic composition, but it is understood that the base member 18 may be constructed of other electrically insulating materials. The base member 18 provides a stable base on which the cartridge 12 is secured. The base member 18 also secures the pin members of the capacitor 10 to the base member 18, as described below.
Capacitor 10 also includes a plurality of pin members 20 that provide electrical connection and mechanical stability to capacitor 10. In the illustrated embodiment, each pin member 20 is a compliant pin that is used to provide a press-fit mechanical engagement with a PCB or other substrate to which the capacitor 10 is to be secured. Referring to fig. 8, each pin member 20 can include a first portion 20A, at least a portion of which first portion 20A can be inserted into a hole in a PCB or other substrate. The first portion 20A is elongated with a girth (girth) that exceeds the diameter of the PCB hole. The first portion 20A may further include a through-hole 20B defined laterally therethrough, wherein the through-hole 20B is sized to allow the first portion 20A to be compressed in the lateral direction. Such compression occurs during insertion of first portion 20A into the PCB hole and allows pin member 20 to be secured to the PCB via a press-fit engagement. The first portion 20A also includes a shoulder 20C that acts as a stop during insertion of the pin member 20 into the PCB hole. The shoulder 20C extends laterally outward beyond the diameter of the PCB hole. The upper surface of shoulder 20C may be used to insert pin member 20 into a PCB hole.
Pin member 20 also includes a second portion 20D extending from first portion 20A. In the exemplary embodiment shown in fig. 2-4 and 8, the longitudinal axis of the second portion 20D is orthogonal to the longitudinal axis of the first portion 20A.
Pin member 20 also includes a third portion 20E extending from second portion 20D. In this manner, the first portion 20A and the third portion 20E may be considered first and second end portions of the pin member 20, respectively, while the second portion 20D is considered a central portion. In the illustrated embodiment, the longitudinal axis of the third portion 20E is orthogonal to the longitudinal axis of the second portion 20D. This may result in the longitudinal axis of the first portion 20A being parallel to the longitudinal axis of the third portion 20E.
Referring to fig. 3, the base member 18 includes a mostly flat bottom portion 18B, the bottom portion 18B being disposed below the recessed portion 18A. Bottom portion 18B includes one or more slots or cutouts 18C that allow pin member 20 to extend through bottom portion 18B. Extending slots 18C in this manner allows third portion 20E of a respective pin member 20 to be electrically connected to board 14 and/or a respective lead and allows first portion 20A of the respective pin member 20 to extend sufficiently from bottom portion 18B for press-fit insertion into a PCB hole. Each slot 18C extends from the bottom surface of the bottom portion 18B to the recessed portion 18A of the base member 18. Each slot 18C is sized and shaped for receiving a pin member 20 therein. In one exemplary embodiment, each slot 18C is sized and shaped such that only the third portion 20E of the corresponding pin member 20 is disposed within the recessed portion 18A of the base member 18, leaving the second portion 20D within the slot 18C and the first portion 20A of the pin member 20 extending outwardly (downwardly) therefrom. In another embodiment, both the second portion 20D and the third portion 20E are disposed within the recessed portion 18A. The pin member 20 may be fixedly secured within the corresponding slot 18C and/or bottom portion 18B of the base member 18, such as by an adhesive.
Capacitor 10 also includes one or more unconnected pin members 30. Each pin member 30 can include a first portion 30A and a second portion 30D similar to first portion 20A and second portion 20D described above with respect to pin member 20 of fig. 8. However, each pin member 30 does not extend into recessed portion 18 of base member 18 and does not form an electrical connection with any portion of capacitor 10. Each pin member 30 may be partially disposed within the slot 18C and secured therein by adhesive or other means. Although pin member 30 does not provide an electrical connection to board 14 or any leads within capacitor 10, pin member 30 provides additional structural stability to capacitor 10 when press-fit within a corresponding PCB hole.
Fig. 5 and 6 illustrate an electrical component according to another exemplary embodiment. In this embodiment, the electrical component shown is an inductor 60. The inductor 60 includes at least one coil 62. Each coil 62 is comprised of a metal wire wound around a hollow core 64, which core 64 may be comprised of a ferromagnetic material, such as iron or a ferrimagnetic compound such as ferrite. In the illustrated embodiment, two coils 62 are wound around a core 64. In another exemplary embodiment, a single coil 62 is wound around a core 64. The ends of each coil 62 form leads of the coil 62 for connection to a pin member, as described below. Together, the coil 62 and the core 64 form the constituent components of the inductor 60.
The inductor 60 also includes one or more pin members 66, which pin members 66 provide electrical connection and mechanical stability to the inductor 60 when the inductor 60 is secured to the PCB. In the illustrated embodiment, each pin member 66 is a compliant pin for providing a press-fit mechanical engagement with a PCB or other substrate to which the inductor 60 is to be secured. Referring to fig. 6, each pin member 66 may include a first portion 66A, a portion of which first portion 66A may be inserted into a hole of a PCB or other substrate. The first portion 66A is elongated with a girth that exceeds the diameter of the PCB hole. The first portion 66A may also include a through-hole defined laterally therethrough, wherein the through-hole is sized to allow the first portion 66A to be compressed in the lateral direction. Such compression occurs during insertion of first portion 66A into the PCB hole and allows pin member 66 to be secured to the PCB via a press-fit engagement. The first portion 66A also includes a shoulder 66C that acts as a stop during insertion of the pin member 66 into the PCB hole. The shoulder 66C extends laterally outward beyond the diameter of the PCB hole. The upper surface of shoulder 66C may be used to insert pin member 66 into a PCB hole.
Pin member 66 also includes a second portion 66D extending from first portion 66A. In the exemplary embodiment shown in fig. 5 and 6, the longitudinal axis of the second portion 66D is orthogonal to the longitudinal axis of the first portion 66A. The distal end of the second portion 6D may be hollow or include a hollow portion for receiving an end or lead of the coil 62 therein. Unlike pin member 20, pin member 66 does not include a third portion, such that first portion 66A and second portion 66D form first and second end portions of pin member 66, respectively.
The inductor 60 may also include one or more unconnected pin members 70. Referring to fig. 6, each pin member 70 can include a first portion 70A and a second portion 70D that are similar to first portion 20A and second portion 20D described above with respect to pin member 20 of fig. 8. However, each pin member 70 does not make an electrical connection with any portion of the inductor 60, such as with the coil 62. Although pin member 70 does not provide an electrical connection to coil 62 or any leads within inductor 60, pin member 70 provides additional structural stability to inductor 60 when press-fit within a corresponding PCB hole.
With continued reference to fig. 5 and 6, the inductor 60 further includes a base member that supports the coil 62, the core 64, and the pin member 66. In the illustrated embodiment, the base member includes a pair of base member portions 68. Each base member portion 68 has a plastic composition, but it is understood that the base member portions 68 may be constructed of other electrically insulating materials. The base member portion 68 provides a stable base on which the coil 62 and tube 65 are secured. The base member portions 68 are illustrated as distinct members that are not directly mechanically connected to each other, but it is understood that the base member portions 68 may also be directly connected to each other, for example, with at least one cross member (not shown) extending in a transverse direction between the base member portions relative to the longitudinal direction of the base member portions. In this manner, such cross member and base member portion 68 may be integrally formed as a single member, such as a single plastic molded portion.
Each base member portion 68 is sized to receive one or more pin members 66, 70. Specifically, second portions 66D and 70D of each pin member 66 and 70, respectively, extend at least partially through the respective base member portion 68 at a location on the base member portion 68 such that first portions 66A and 70A of pin members 66 and 70, respectively, extend sufficiently downward from the base member portion 68 to be securely inserted within the holes of the PCB. As shown in fig. 6, the second portion of each pin member 66, 70 extends through the base member portion 68 in a transverse direction along a top portion of the longitudinal sides of the base member portion 68, but it is understood that the second portion may extend along other portions of the base member portion 68 as well as in other directions.
In the exemplary embodiment shown in fig. 5, the distal ends of second portions 66D and 70D of pin members 66 and 70, respectively, extend at least partially from their corresponding base member portions 68. The distal end of each second portion 66D of pin member 66 is electrically and mechanically connected to an end or lead of coil 62. Such a connection may be a soldered connection or the like. The pin members 66 and corresponding coils 62 may be integrally formed as a single member. In an exemplary embodiment, an end or lead of the coil 62 may be inserted into the second portion 66D of the pin member 66 and soldered or otherwise secured to the second portion 66D. In one embodiment, the distal end of the second portion 70D of each unconnected pin member 70 extends from the respective base member portion 68. In another embodiment, the distal end of second portion 70D does not extend from base member portion 68.
FIG. 7 illustrates an electrical component according to another exemplary embodiment. The electrical component is an inductor 80 having the same components as inductor 60 described above, including coil 62, pin members 60 and 70, and base member portion 68. In addition, instead of the core 64, the inductor 80 includes a core 82 having a different shape. In the illustrated embodiment, the core 82 may have an E-shape or "block 8 (block 8)" shape that is similar to the shape of a cinder block, with the coil 62 wound around the center tooth of the core. In the case of a block8 shape, the core 82 may be formed from a plurality of core members that are combined, connected, or otherwise mechanically held together.
In another exemplary embodiment, the base member 18 and the pin members 20, 30 of the capacitor 10 may form a pin structure that may be used with any pin-less component member for forming a discrete electrical component. Similarly, the base member portion 68 and the pin members 66, 70 of the inductors 60, 80 may form a pin structure that may be used with any non-pin component for forming discrete electrical components. In this manner, such a pin structure may be manufactured and sold separately from the component members to which it may be attached.
Example embodiments have been described herein in an illustrative manner, and it is to be understood that the terminology used is intended to be in the nature of words of description rather than of limitation. Obviously, many modifications and variations of the present invention are possible in light of the above teachings. The foregoing description is merely exemplary in nature and, thus, variations thereof are possible without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (20)

1. A discrete electrical component comprising:
a component member having at least one lead;
a base member on which the constituent members are supported; and
at least one compliant pin member, each compliant pin member having a first end portion configured for press-fit engagement in a printed circuit board and a second end portion electrically connected to the at least one lead of the component member, the at least one compliant pin extending at least partially through or into the base member.
2. The discrete electrical component as recited in claim 1, wherein the at least one lead and the at least one compliant pin member of the component member are integrally formed as a single member.
3. The discrete electrical component as recited in claim 1, wherein the at least one lead of the component member is soldered to the second end portion of the first compliant pin member.
4. The discrete electrical component as recited in claim 1, wherein at least one of the central portion and the second end portion of the at least one compliant pin member extends through or into the base member.
5. The discrete electrical component as recited in claim 1, wherein the base member comprises a recessed portion that receives at least a portion of the component member therein.
6. The discrete electrical component as recited in claim 1, wherein the at least one lead comprises a plurality of leads, the at least one compliant pin member comprises a plurality of compliant pin members, each lead connected to a compliant pin member, and the base member comprises a first base member portion and a second base member portion, at least a first compliant pin member of the plurality of compliant pin members extending into or through the first base member portion, and a second compliant pin member of the plurality of compliant pin members extending into or through the second base member portion.
7. The discrete electrical component as claimed in claim 6, wherein the first and second base member portions are spaced apart from and not directly connected to each other.
8. The discrete electrical component as recited in claim 1, wherein, for each compliant pin member, a longitudinal axis of the first end portion is parallel to a longitudinal axis of the second end portion.
9. The discrete electrical component as recited in claim 1, wherein, for each compliant pin member, a longitudinal axis of the first end portion is orthogonal to a longitudinal axis of the second end portion of the compliant pin member.
10. The discrete electrical component as recited in claim 1, wherein the constituent members comprise at least one core and at least one coil wound around the at least one core.
11. The discrete electrical component as claimed in claim 1, wherein the discrete electrical component comprises a capacitor.
12. The discrete electrical component as recited in claim 1, wherein the at least one lead comprises a plurality of leads, the at least one compliant pin member comprises a plurality of compliant pin members, each lead is connected to a compliant pin member, and each of the plurality of compliant pin members extends into or through the base member.
13. The discrete electrical component as recited in claim 12, further comprising at least one unconnected compliant pin member, each unconnected compliant pin member being electrically isolated from the plurality of leads of the component member and extending into or through the base member.
14. A pin structure for a leadless electrical component having at least one lead, the pin structure comprising:
a base member on which the constituent members are to be supported; and
at least one compliant pin member, each compliant pin member having a first end portion configured for press-fit engagement in a printed circuit board and a second end portion configured for electrical connection with the at least one lead of the component member, the at least one compliant pin extending at least partially through or into the base member.
15. The pin structure of claim 14, wherein at least one of the central portion and the second end portion of the at least one compliant pin member extends through or into the base member.
16. The pin structure of claim 14, wherein the base member comprises a recessed portion sized and shaped to receive at least a portion of the component member therein.
17. The pin structure of claim 14, wherein the at least one lead comprises a plurality of leads, the at least one compliant pin member comprises a plurality of compliant pin members, each compliant pin member configured to be connected to a lead, and the base member comprises a first base member portion and a second base member portion, at least a first compliant pin member of the plurality of compliant pin members extending into or through the first base member portion, and a second compliant pin member of the plurality of compliant pin members extending into or through the second base member portion.
18. The pin structure of claim 17, wherein the first and second base member portions are spaced apart from and not directly connected to each other.
19. The pin structure of claim 14, wherein the at least one lead comprises a plurality of leads, the at least one compliant pin member comprises a plurality of compliant pin members, each compliant pin member is configured to connect to a lead, and each of the plurality of compliant pin members extends into or through the base member.
20. The pin structure of claim 19, further comprising one or more unconnected compliant pin members, each unconnected compliant pin member extending into or through the base member and configured not to connect to a pinless electrical component.
CN201910681534.8A 2018-07-26 2019-07-26 Compliant pin structure for discrete electrical components Pending CN110783104A (en)

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US11509078B2 (en) 2022-11-22
US20200036118A1 (en) 2020-01-30
DE102019210869A1 (en) 2020-01-30

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